Measurement and Analysis of Tunnel Impact Caused by Excavation of Foundation Pits on Both Sides
Based on a case study of a foundation pit project,this paper uses numerical methods to analyze the impact of asymmetric ex-cavation of foundation pits on both sides of existing tunnel.The measurement results show that asymmetric excavation of foundation pits on both sides can lead to displacement of the tunnel in the direction of the large foundation pit and result in uplift and deformation of the existing tunnel.At the same time,reasonable arrangement of construction sequence of foundation pits on both sides can effectively control the horizontal displacement of the tunnel,which provides reference for the optimal design and construction of similar projects in the future.